Join Date: Jan 2004
Location: Formerly Central Coast CA, Now in Bridgeport TX
I dont think the sand is so much a necessity as an asthetic addition. If you mix the sand in thoroughly enough with the eco, i dont think it will settle very quickly, should actually take quite a while. Although i dont have eco, or sand, im using flourite, which is similar in grain size to eco. (mine is mixed with rock) I have no problem holding down the smaller rooted plants, but logically it would make sense that sand may fare better. I would suggest try the substrate mixture you prefer as far as asthetics. If that doesnt seem to be working to the effect you want, run to Home Depot, buy some sand, and mix it in after the fact, until the desitred effects are acheived. just my 2 cents.